Apron-gearing



UNITED STATES PATENT OFFIcE.

I GEORGE N. OLAPP, OF SEVEN MILE, ASSIGNOR OF ONE-HALF TO PLEASANT R. SHEPHERD, OF HAMILTON, OHIO.

APRON-GEARING.

SPECIFICATION forming part of Letters Patent No. 295,906, dated April 1, 18:84. i

I Application filed June 13,1883. (No model.)

To all whom it may concern:

Be it known that I, GEORGE N. CLAPP, of Seven Mile, Butler county,Ohio, have invented certain new and useful Improvements in 5 Aproii-Gearings, of'which the following is a specification.

This invention relates to gearing for endless carrier-beltssuch,for instance, as are used on self-binding harvesters.

The invention relates, particularly, to the construction of the toothed portions ofdrivingroller and apron,whereby the mere friction of smooth aprons is supplanted bytoothed gearing of an elastic nature and of peculiarly simple construction.

The invention will be understoodfrom the description and drawings.

In the accompanying drawings, Figure 1 rep resents a portion of an apron embodying my invention, shown in face elevation with apart broken away to exhibit the inner surface of the apron; and Fig. 2 represents an edge view of the same, some parts being in section. I

In the drawings, A represents part of an endless canvas apron; B, the roller which drives theapron; O, the roller-shaft or journals; D, the roll-pulley by which the roll re ceives its motion; E,a shell-pinion made in halves and secured to the roll; F, the teeth of 0 the pinion; G, a leather strap, secured'to the inner surface of the apron in line with the pinion; H, a series of teeth formed in pairs and secured to the strap; I, the individual teeth of the series; J, the cars by which each pair of teeth is secured to the strap, and K the space between the two teeth of a pair.

Theseries of teethH are formed of small rectangular frames of metal.

. The sides of the frame form teeth properly 4o spaced to suitthe pinion, and each frame is so located with reference to its neighbor as to maintain the proper tooth spacing throughout the series.

In practice the teeth are first secured to the straps and then the straps to the apron. There 5 may be as many of the straps and pinions as the width of the apron renders advisable.

The pinion being in halves, as described, 7 permits the ready application of this system of gearing to old machines. 0

The straps re-enforce the apron at the strainpOints and relieve the apron from all the strain of driving. I

Aprons provided with interior cleats in combination with a longitudinally-grooved driving-roll have been devised by others. I disclaim such as of myinvention.

It is not new to drive an endless chain by means of a sprocket-wheel, andan endless apron has been arranged over such chains and be attached to the chain at one point, so as to be drawn along by this single attachment. I disclaimsuch as of my invention.

I claim as my invention 1. The apron-carrying roll provided with short teeth, the canvas apron, and the metallic teeth formed in independent pairs and secured to the interior of the apron, all combined substantially as specified.

- 2. The combination of the apron-carrying roll provided with short teeth, the apron, the re-enforcing draft-straps,and the metallic teeth arranged in sections and secured independent- 1 y to the strap, substantially as and for the purpose set forth.

GEORGE N. GLAPP. 

